Handrolled linker?

Any estimates on the difficulty of changing Linker.c to be able to use standard dynamic link calls (dlopen, ...) rather than having to be customized for every target platform. I'm considering making this work on powerpc-linux, but I'm thinking it might be a more useful task to make the linker more portable, rather than just hacking in another platform. There are a few platforms (linux alpha, linux powerpc) where the compiler wasn't very difficult to get working, but ghci doesn't work because of the linker problem. Dave